Ty-pe-writing machine



(No ModeL) 5 Sheets-Sheet1. A. T.BROWN. TYPE WRITING MACHINE. No. 436,333. Patented Sept. 16, 1890.

iinvcwtetz (No Mbdel. 5 Sheets-Shet 2. A T BROWN TYPE WRITING MACHINE.

No. 436,333. Patented Sept. 16, 1890.

\(No Model.) 5 Sheets-Sheet. 3. A T BROWN TYPE WRITING MACHINE.

Patented Sept. 16, 1890.

(No Model.) 5 Shets-8heet 4. A. T. BROWN.

TYPE WRITING MACHINE.

(No Model.) 5 Sheets-Sheet 5.

A. T. BROWN.

TYPE WRITING MACHINE.

No. 436,333. Patented Sept. 16, 1890.

UNI TEDQSTATES P TENT OFF CE.

. ALEXANDER rr. snowmen SYRACUSE, NEW vmnr.

r-Y-PE-wmrme MACHINE.

SPEGIFICA TLON forming part of Letters Patent No. 436,333, dated September 16, 1390. Application filed January 18} ISQOQBex-ial110.837,?38. '(Ho model.) Patented in Belgium February 25, 1890, No- 67,162.

To all whom it may concern;

Beit known that I, ALEXANDER '1. BROWN, residing at Syracuse, in the county of rOnondaga and State of New York, have invented certain new and usefullniprovementsin Type- WritingllIachines, (for which I have obtained LettersPaient inBel gi um, dated February 1890', No. 67,162,) or which the following is aspecification, reference being had therein to m the accompanying drawings.

This invention relates to type-writing ma Figure 1 is a rear perspective view eta machine formerly invented by me, partly broken away to show the arrangement of type-levers. z 5 Fig.

2 is a broken front perspective view of the roller-carriage, showing escapement, the

' paper-roller or platen omitted. Fig. 3 isa 1 broken perspective of same carriage with escapeinent in different position. Fig. 4 is a broken elevation from the front of rear rail of the carriage and margin regulator or gage. Fig. 5 is a similar view with rocker-bar raised. Fig. 6 is a cross-section of the top plate of the machine and carriage, the position of the pa? 5 per-roller being indicated. in dotted lines, Figs. 7 and S-aiie;details of the escapemenh' and Fig. 9 a b .Jken detail showing pivot of rocker-bar. Fig; 6 is a section showing set screw for adj ustable track. .Fig. 6" is a broken plan of one end of adjustable track. Figs.- 7 1and 7} are elevations of escapement-pawls, looking toward the rear of the machine. Figs. 9F and 10 are broken details of :part of the 1 bottom of the carriage, showing'catch of mar- 5 ginreg'ulator orgago. Fig. 11 is an end view of g the paper-roller or platen and cradlere moved from the carriage. Fig. 12 is a bottom view-of roller-cradle and attachments. Fig. 13 is a detail partial perspective view" of- '50 springs-pawl 24. Q l g 'lhedetter a designates the top plate of the "machine aud'a' a bar above the plate. This studs.

' front groove of 'lherock-simr't ll has a Sllui'l'. armor camplate carries studs 1. 1, extending upward, and V the guiding-.rails' 2 and 3areattached totb'ese The guide-rails 2 and 3 are g:oov'ed on oppositeside faces, and one of these rails-is adustable awayfrom the other by set-screws 7 or by other suitable means.

The inner side .of' the parallelside rails of 6o 7 the carriage b are girooved'to correspond with v the guide-rails, and-steel balle5 are interposed in thegrooves. 'lheweigdtnf thecar riage is thus borneon'the'balls 5, running dnf the grooves, and the adjustable tracliorguides .6 rail can be set up to hold the earring firmly imposition without binding.. -E l i ead stable, rail is held to thetop plate by screws, ing through slots 9 in the rail. (See detail plan. Fig.'.6".) 'lhe'other rail may be-fixedto the top plate in any, suitable manners The grcoves in'which the balls run will be of such form as to give few pointsof contact, and the bearing surface will thus be reduced toa minimum 7 The groove in each rail will have an upper and slower bearing-surface for the balls, such surfaces being planes inclined from the horizontal, (clearlyshown in Fig. 6,) and the balls, while having hearings on these planes, will not bear against the frontaud rear faces of the grooves. By'this construction friction is reduced to a minimum, and the balls hold the carriage from lifting. Preferably thefe will be two balls in the reargroove and one in the the rails. The carriage is drawn along on the ball-bearings by a spring and. chain or strap connection, as usual. The rear'bar of the carriage-frame bears arackbar 10, having teeth extending upwardly. A

rock-shaft 11 is supported .in a bearing 12 above this rack 10, and an arm 13, securedto this rock-shaft 11, is connected by ap'ull-rod 14 with the key mechanism, so that the rock- .shaft is rocked whenever a key is struck, the connection being well known in this art.

frock-shaft l1 bears a pawl 15 directly over the rack-bar 10, and whenarm 13 is drawn down this pawl .15 will engage one tooth of.

said-rack.

lever 16 extending atthe side opposite said pawllfi, and for convenience said arm-may be a part of the pawl, but extending alongside the rack 10. x

its

top; plate of :bar a of the tnaehine. This pawl 17 has a set-screw'2O projeeting through-'- an offset 19, so as to bear on the arm or eamanakialshaft 51, which rests in gnidewsys lever 16.

g Y jlhe pawl 15 is normally held outer engage v mentwith' the rack 10 by aspring m anysuiin able location, such a spring being indicated in a diagrammatiway at e, Fig. 7. The

pawl 17 normally drops down and engages one tooth of the rack 10. When the arm 13 is drawn down, pawl 15 engages the next succeeding tooth of rack 10, and pawl 17 is lifted out of engagement with the rrack 1 by arm or cam lever 16 hearing on screw20. The rack-- teeth on bar 11 and the carriage will thus he held. alternately bythe pawls15 and 17, and

will be permitted to move along the distance of a rack-tooth whenever shaft 11 is rocked by arm 13. The relation oithe' pawls-15 and v 17 to each other can be regulated by screw 20.

A rocker-bar30 is pivoted or hinged at each end of the carriage-frame and extends'under a stud 31, projecting from the side of pawl 20. This bar can be rocked by lever 33, extending under a projectiou 3i on bar The v lever-33 is pivoted to theframe (near theend spring-37 hears the rocker-bar '30 down. 4 teeth 41 on its rear-face,'and is held againsta ofthe roller) alt-35, an'd'a finger-piece 36oztends. to thefront of the carriage; v

Bawl 1.5 isnormallyout-ofengagement with 3l,and.thu's throws pawll7 out of engagement either direction. On removing the pressure. from lever 33 thepawl 17= will engage what'- over tooth of the rack is in front of it. A

1 The margin regulator orgag'eAO has rackrack 42 on the track or guide bar 3 bya spring 43, said spring beingheld against the-- I gage by a screw 44. passing through a hole in 31:0 hold the-gage'square and serves-as a stop against which the projection 39 on the vthe spring and a slot 45 in the gage; The up: ward project-ion 46 on the gage overhangs bar rocker-bar 30 abuts when the rocker is down,

thus limiting the movement of therockerbar 30 and thecarriage'to whichthe bar is face of the projection dwill permit the pro-- attached; This determines tbe margin of the sheet in writing; but if it is desired to write ontside'the margin as a side note the rockerb'ar 3O'n1ay be raised and thecarriage moved to the extreme of its moveinent. The inclined jection 39, to ride over said projection 46 in one directionfroching bani-l0, but not enough to raise pawl 1;1'. Y .A lever"' 47,pivotedfto the lower face of .track 3 engages the-gage 40 and pa press rackteeth "41 of the gage out of contact withteeth-14 2 of the track-bar. The gage 40 can then; he slipped along lengthwise of the ma-' chine, and wheh lever 47 is released the teeth v 41 will again engage. teeth 42 and hold gage position at which the cpaperguard or apron 65. Thisguard-;-is pi.

,lever 33 rocke -bar .30npward and lifts stud round said barj standheheld by agjset screw They bearagainst the aproriand tend-to press cradle-by a rivet or screw 240 or in any-other suitable manner so that the ratchet-and roller, to which it: i s

- lever 25, hung in the bar 57;engages'the's5prin 5' The paper-holding roll or cylinder 50 52 on the carriage,and the roll is heldin the carriage in :jthe-position shown in Fig. 1, in printing position, but isswuhgforward' inthe ways 52, so as tcvbe close alongside the index 53', Fig. 6, to bring thelast-written line of writing into, position, to be readby the-operator.

The shaft 51' has its hearings in the end pieces or spiders'5 5 -55. -,These end piecesor te spiders 55 are connected by bars 56 and 57 one at each side of'the roller -andthe spiders and bars constitute a cradle which lispe'rmaa nently connectedte the roll;v

Thespiders 55 have feacha P 93 ggtud'f 5 58,.which-studs rest under therspring hcoks 59 of the carriage iramebtThese-hooks arp hung in standards: 60,:and areginagposition midway of ways 52, so .thatitheldownward pressure of the spring-hooks will' pressgthe; roll and cradle in eithect'ion'to-the fro or rear-of theways 52 their greatest elevation abovetlie-ways-52. The rear bar 56 of the cradle supports the otally hung to 113110 cradle-bar {5.6-1 The-endapron have-bearings 70'fo13the paper pressing; or feedi'oller 66. Curved;fihgei s68}eonformi generally to the curvatur of thepaperehold ing roll, '50, which :they partially "surround andare extensions of said strips 69;

Theapron fifiiprojeets somewhat ahojvefthe cradle-bar 5.6. Springs 70, secured tosaid ear; I bear on the a ron. These springs mam wl the lower end of the apron; roll fiiandfingers -68 close against the paper-rollwdio guid an hold the1 paper against said roller When it is desired to apply ;a:' urn-heir sheetsof paper tothe rollegapretss agains the rear side of apron ahovfeiii t's snppor throws the fingers 68 and 'roller 66 awayfi-ro the paper-holding roll, leaving a spa'cel int which the paper can bereadilyiedl; The paper-holding roll l ori'platen 50 v is re iated by a pawl-"21 engaging'ratohet -22, the a pawl being operated by handle 23 in usual; rat I inanner this constructidnpbeing .old A spring-pawl 24 is attaehed'to-z theuendof the; i

This pawl enters. Ji l notches between the teeth: ofithe ratehetand thus holds the ratchet against, r0 tat on attached will not tnrn 'in the cjradlewithout the application ofjsome force; AbelI-eran-k pawl, and impressing on. thevle'ver 2 24 may be disengaged, and therolle free tc tum in its bearingsjn-the "o ad I have described thepestrforinof tien now used by me; but itwill be onderstoodthat I intendto cover mechanical equivalents when such are substituted. For instance, the rocking bar 30 might'have asimi'lar or equivalent movement or function without being pivotedto the carriage, as shown.

The reversely-inclined faces of the guiderails of the ball-bearings might be varied; the position of the rails might be. reversed, and the rack 42 need not necessarily be on .the rail, and various other mechanical changes rails on said frame and carriage, said rails having grooves in their sides, and bearingballs interposed in the grooves thus formed, the carriage being thus held down by the balls, at leastfone of the guide-rails being ad justable, substantially as described.

In a type-writing machine, the combina tion, withthe top plate of the machine, of a fixed rail and an adjustable rail thereon, the

rails being provided with grooves in their outer faces, a carriage thereon having rails outside the rails of the top plate and havinggrooves on their inner faces, and anti-friction balls interposedin the grooves, substantially as described. 4.. In a type-writer, the combination, with the guidegrails on the top plate having side grooves and bearing-surfaces therein inclined from the horizontal, ofacarriage having complementary grooved rails with bearing-sun faces inclined in opposite direction from-those of the frame-rails, and bearing-balls in said grooves, substantially as described;

5. The combination, with the carriage of a type-writer, of a rack-bar thereon ,& rock-shaft supported on the frame having a pawl in position to engage said rack-bar, a second pawlindepeudently supported on the frame in position to engage the rack-bar and to be disengaged by the firstfmentioned pawl, and erectscrew by which the relative position of one pawl with relation to the other is controlled. 6. The combination, with the carriage of a type-writer, of a rackbar thereon, a rock-shaft mounted on the frame having a pawl. in posi bion to engage the rack-bar, and an arm connected to said pawl which lifts as thepawl is frame in position to engage the rack-bar and having a bearing on'the arm of the first pawl.

so as to liftwheh the first pawl is depressed. 7. The combination, with the] rail 3, of a movable margin-regulator thereon, the carriage, and a rocker-bar on the carriage in position to engage said margiu-1-egulat0r and to swing away from thesame as the bar: rocks, substantially as described.

depressed, and a second pawl mounted on the l 8; The combinatiop, with themovable mar gin regulator or gage, ofthe carriage, arockerbar on the carriage having a projection in position to engage said margin-gage, and alever extending to the frontof the carriage by which the rocker-bar may be rocked out of position to'engage said ill argin-regulator, substantially asdescribed. i 9. The combinatiomwith the margin-gage having a tooth, of a spring bearing on said gage, a rack on the guide-rail with which said tooth engages, and a lever on the' frame by which said tooth may be pressed out of engagement with said rack;

10. The combination, with the slotted margin-gage having a tooth, of a spring'bearing against said gage, a screw passing through said spring and the slot in the gage, and a rack-bar into which said screw enters and with which said tooth engages, and a lever pivoted to the bar in position to press the gage-tooth out of engagement with the rack.

:11. The combination, with the adjustable margin-gage having a projection with a'plane face at one side and an inclined face at the other, of the carriage having a rocker-bar constructed to abut with the plane face of said gage but to ride over the inclined face when moving. in reverse direction. 12. The'combination, with the-frame,- of a margin-gage adjustably secured thereto and the carriage having a movable progect-lon in position normally 'to engage the margin-gage and stop the carriage, but which when moved out of normal position permits a carriage movement to dispense with margin altogether. 13. The combination, with the cradle and the roller having a ratchet-wheel attached, of a spring-pawl attached to the cradle and engaging the teeth of the ratchetwheelto lock the roller and cradle together, and a bellcrank lever hung in the cradle and bearing on said pawl to disengage the-same from the ratchet, substantially as described. In testimony whereof I alfixmy-signatnrein presence of two witnesses.

"ALEXANDER '1. BROWN. -Witnesses:

ii. MoMURcHv,

0 E. Dennison. 

